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Updated: Dec 29, 2025

Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
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Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes

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超分子リソルシナレンカプセル内のテルペンサイクルに関する要件:結合水とそのプロトネーションが触媒活性を決定する

Severin Merget1, Lorenzo Catti2, GiovanniMaria Piccini3,4

  • 1Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4058 Basel, Switzerland.

Journal of the American Chemical Society
|February 8, 2020
PubMed
まとめ

この研究では,水はレソルシナレンベースのマクロサイクルの触媒で陽子シャトルとして作用し,効率的なバイオミテック・テルペンサイクルを可能にします. これらの超分子触媒は 新しい触媒システムを開発する上で 鍵となるものです

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The rate of acid-catalyzed hydration of alkenes depends on the alkene's structure, as the presence of alkyl substituents at the double bond can significantly influence the rate.
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Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
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Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...
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